Electric regulation.



.l. L. CREVELING.

ELECTRIC REGULATION. APBLICIATION FILED DEC.29, 19:0.

Patented Apr. 27, 1915.

WITNESSES Q V lNl/ENTOR Eg 15 comm W W? e mtx fTo all 'whom it may concern: 1

i I Be it known that I, JOHN LQCnnvEmNo, a

drawing, forming a part thereof.

resident of the city, county,.- and State of New York, have invented certainnew and useful Improvements in Electric Regulation,

asset forth in the annexed I specification and My lnventi pertain to I that I electric regulation wherein it is desired; to

:automatica lly govern a' g'eneratorin a pre- -determme'd manner. 1s i As my i11'vention=,i'siparticiilarly applicable :to those systems wherein aflgeneratpr, driven I -at variable speed isiused to charg'e astorag'e' battery andfoperate lamps or, other translaty n: the

v of my invention.

zlingaelement n; ,'th s-instance indicated In the drawing, '1 j-m senet dynamoxor v generator provided with theusnah field. coil 2, havingin series therewith a field 'controlas a rlieostat 10f the-carbon pile, variety.

' lTromthe,dynamo l the; osit vetlead" 4 is .earried to," the; positive ,si e of the; storage battery. 5, and lampso'r translatingv devices 16, Lboth. ofwqhich have their negative terminals carried-to the negative-lead 7: which is shown Lin iEi'gs l-qas havmg the-solenoid 8*in series -therewith.' .In i-F-igi 2, the branch from the positive I lead 4. to the, hatter-K is shownas; having in series therewith gt ,The- \only difference, in the 'arrangements- 1 shown in Figs 1iand 2 is thatin-Eig'. 1 the- 'solenoid 8carr1es theentire': generator output;

I solenoid-9 -carriesfionly-zthe battery ,current.

-" The-carbon pile 3 has its resistance controlled to the ba-tteryand .lamps,twhileiin'Eig. 2, the

rbythegifyoted lever l0, n ormally drawn in an upwar 111;. in sii'c'h manneras to tend to, compress thgpile ii and lower the. resistance thereof, The lever: 10,- is provided' 'at one extremity-- direction as by the] adjustable spring .withgthe core of magneticfrnaterial. l2 surv I rmindedby the solenoid r13 in Ishu nt-across the leads 4 and 7, or-in'shunt across that v portionof thegsystem upon which; it is" desired to maintain a constant voltage throu out speed changes of the generator, he

- 'nmc'rnxc" nneuna'rron.

Specification of Letters Patent Application-filed December 29,191o, serial No. 599,874;

class of e solenoid 9.

which, turn is carried the lever 15, pivoted as at 16 and normally drawn in surrounded by thesolenoid 8 in- Fig. le or :roriuLQ 'c'nnvnnmo; or new Yonk, N.'Y.,sss1enon 'ro sarn'rr i annpwarddirection as by adjustable spring l7, ten cl; mg to hold the lever mcontact wi 1 the adp stablelimiting screw 18.: The lever the solenoid 9 in Fig.2,in [such manherthat excitation of the solenoid tends to depress the lever-15' againstthe action of spring 1.7' and weaken the upwardpu-llin'ge fiectxo the spring 11 11 50111 the lever '10, in siich manner the member 3 in such manner, that the volt- ;age, necessaryscross the coil 13 in vorder to inake it respond and keep thegenerator v'olt- I a e, fr'o1ii risin' uponian increasein speed, f

w lljbelessene b1 excitation' of jthelseries v solenoid when su cientto draw'..,its core .19 downwardly againstspri ihg' 1'7, 5 vention is. I substantially as follows:-'-W1th' the; 5.; I ator running, in" the system shown in; ig". 1, 7 current ,will fiowl through the field, 2 resistanceB'so as to, excite the generator in awell-lmown'inanner, and. i f .the generator y voltage be snflicient, current" will i flo'w through theileai i, 7 storage hatte'qijft and i l and return to the generator throu hicoil's. .Qurrentwill' also .fiowfromthe lea '4It'o'1the' f1 -Ie'ad 7through tl1e-ooi113 andl'with th'e'lever I 15 held against. the 'stop118, I sof'adjustwtlief Y mains or; across any' pointwo ,the "circuit A, practical -'operation of my; 1n

lamps orv translating devices- 6, to theilead-Y spring, '11,. that Whenithe- OIta 'e .acrossfthe as pto cases, less, opposition to beoverco nie vbytheco l 13 m m'creasi'ngthe resistanceof I 31- that thessolenoid13, ina 'bevconnected and which'itisf desired .tohod from hayi 'n nnined. yoltage, reaches a certain voltage above which it is deeixfedto;freventxany fexcess,i fthe. current in the coi I113 will he suflicient toidraw-the, c0re -12 downwardly against the action ofspring ll'and i-nc'rease the resistance -3 in .s'uohv manner; as to; prevent the generator voltage: fromfirising above this predetermined point; I then adjnstth'e spring lf in snchmanner, that ifthis' prede as been set" to, old the generatorf'from ex,-

. the solenoid .8 the said solenoid willscause the core 19 to be drawn downwardly againstv the action of spring 17and the tension of the sprin 11 thus weakened in such manner as to rea just the said spring 11 so to's eak foralower voltage across the coil-13,;w h

voltage the coil 13 will hold constant throughout speed changes of the generator.

The operation of the system shown in gard to Fig. 1, with the exception that the current flowing to .the batterythrough the so1enoid 19 instead of the current in the mam circuit as in Fig.1, governs the'adjust-' ment' of the spring 11 through its action upon the lever 15. Thusit Will be obvious that'I have produced asystem wherein the generator is automatically. governedto "maintain a substantially constant voltage and that this voltage whic throughout changes in speed or tendencies of its volta e to vary beyond a certain l1m1't shall be held constant V throughout-speed changes is varied by the {to the exact'details or construction and op;

l ment 0 'el'ation' above set forth as a: mere diagram- 'matic refpresentation ofone form ofemploymaybe made within the scope of said inivention and is set forth the" following 1; Means for regulating a generator comrehending. voltage varying means; means or operatlng the same r onsive to voltage fluctuations andmeans or' adjusting the operation 0' said lastrnamed means 'ada ted-- to be actuatedwhen the current produce by the generator exceeds a predetermined limit.

, '2. Meansfor regulatinga generator comprehending' means for varying the voltage thereofy-means for controlling said voltage varying means responsive to voltage fluctnations; and: means for adjusting-the e'fi'ect produced by said voltageresponsive-means depending upoucurrent fluctuations and ads ted; to be actuated when thel'current pro need by the. generator exceeds a predetermined limit.

means for varying the adjustment-thereof I.

3.1-Means for regulating contrdllingthe same and means for changmg the adjustment thereof responsive to current fluctuations, beyond .a predetermined';-l-imit v 1 4. Means: for regulating a generator comprehending -a. voltage operated regulator th efor, means for adjusting the same and idependingupon current Fig. 2 is the same as that described with re and actuated when the current in have rovided means whereby current flowingm a portionofthe system wherein-it is'desired; to prevent the current exceeding apredetermined'amount;

f I do not anyway to limit myself,

.myinvention, as 'wide departure a generator com-' prehending regulating means responsive to" voltage fluctuations, adjustable meansfor theretoto exceed a predetermined limit.

flaaaaa beyond f i 5. Means for regulating a generator cou1 prehending a regulating element,'means for operating the same re's'ponsive'to voltage fluctuations comprising resilient means and means for varying the effect of said resilient beyond a predetermined finite limit. I

, means depending upon current fluctuations; j

6. The'combination-with: a generator; a

regulator therefor; a supply circuit; and} means for regulating the generator depending upon the voltage across the supply 'cir-.'

cult; of means for adjusting the voltage to be held across the supply circuit dependent; upon the-current produced bythe generato'ri? the circuit rises above a predetermined limit.

7. The combination with a I generator "of H means for regulating the'samecomprehend a ing a regulating element volta'ge operated" means for controlling the regulating "efleot .85 thereof, resilient means for cbiiperatingwith 1 said voltage 0 erated mean d current7 at fected means or adjusting thelsaid resilient means to prevent the generator" current: ex-

ceeding a predeterminedlimit.

- 8. The combination with a source of Va riableelectromotive force,- of means for controlling said electromotlve force in "response;

ing the voltage responsive fmeans affected-by value only.

7 9. 'The combinationwith asou'rceofielectromotive force tending to vary, operated means for holding said electromos to voltage fluctuations and means for adjust- V current fluctuations abovefiaf' pif'edetermined of voltage two forcesubstantially constant throughout means for adjusting. the value of electrome- Value.

ten'denciesjto varyand current responsive v the force to be held constant afiected by cur-i rent fiuctuations beyond Ja predetermined- 10.. Thecombination ageneratorand a supply circuit, of means, for regulating the generator tohold its voltage constant and means cooperating. therewith to adjust" the v lt ge t operating the same affected by excess in outbe held :..constant and means for rent] above 'a predeterminedvalueonly. r Y Y 11. -The combination with a generator".

driven, at variable speeds, means-resgonsive e-'gen-- to voltage fluctuations for holding-it orator: voltage constant throughout speed changesand means for adjusting the voltage to be held constant of means for operating the ad usting means to-hold thevoltage below that necessary .to-cause current due I afiedetermined value.

Witnesses; v v 'CHA$. McCi CHAPMAN, w

ANITA E. .Tumc.

vL. OREVELING-' 1 

